14.13 HA Terminal (HAJEM-A) ......101 14.14 Demand Control ........102 CS-RZ25WKRW CU-RZ25WKR 14.15 Pump down Operation by CN-S ....102 CS-RZ35WKRW CU-RZ35WKR ....35 CS-RZ42WKRW CU-RZ42WKR 15. Operation Control CS-RZ50WKRW CU-RZ50WKR ....36 (For Multi Split Connection) ......103 8.
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21. Service Data ............ 164 21.1 Cool Mode Outdoor Air Temperature Characteristic ........... 164 21.2 Heat Mode Outdoor Air Temperature Characteristic ........... 168 21.3 Piping Length Correction Factor ....172 22. Exploded View and Replacement Parts List ..............175 22.1 Indoor Unit ..........
1. Safety Precautions Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing. Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model installed. ...
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WARNING Do not use joint cable for indoor / outdoor connection cable. Use the specified indoor/outdoor connection cable, refer to instruction CONNECT THE CABLE TO THE INDOOR UNIT and connect tightly for indoor/outdoor connection. Clamp the cable so that no external force will have impact on the terminal. If connection or fixing is not perfect, it will cause heat up or fire at the connection.
2. Precaution for Using R32 Refrigerant The basic installation work procedures are the same as conventional refrigerant (R410A, R22) models. However, pay careful attention to the following points: WARNING The appliance shall be stored, installed and operated in a well ventilated room with indoor floor area larger than A ) [refer Table A] and without any continuously operating ignition source.
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CAUTION Installation (Space) Must ensure the installation of pipe-work shall be kept to a minimum. Avoid use dented pipe and do not allow acute bending. Must ensure that pipe-work shall be protected from physical damage. Must comply with national gas regulations, state municipal rules and legislation. Notify relevant authorities in accordance with all applicable regulations.
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CAUTION 2-8. Checks to electrical devices Repair and maintenance to electrical components shall include initial safety checks and component inspection procedures. Initial safety checks shall include but not limit to:- That capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking. That there is no live electrical components and wiring are exposed while charging, recovering or purging the system.
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CAUTION Removal and evacuation When breaking into the refrigerant circuit to make repairs – or for any other purpose – conventional procedures shall be used. However, it is important that best practice is followed since flammability is a consideration. The following procedure shall be adhered to: •...
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CAUTION Recovery When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all refrigerants are removed safely. When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed. ...
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Model CS-RZ25WKRW Indoor POS (EAN) 5025232912121 Model CU-RZ25WKR Outdoor POS (EAN) 5025232913169 Type Cross-flow Fan Material ASG30 Motor Type DC (8-poles) Input Power 43.8 Output Power Cool Heat Cool Heat Cool Speed Heat Cool 1140 Heat 1230 Cool 1190 Heat 1280 Type Propeller...
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Model CS-RZ25WKRW Indoor POS (EAN) 5025232912121 Model CU-RZ25WKR Outdoor POS (EAN) 5025232913169 Height (ID mm (inch) 290 (11-7/16) / 542 (21-11/32) / OD) Width Unit mm (inch) 779 (30-11/16) / 780 (30-23/32) (ID / OD) Depth mm (inch) 209 (8-1/4) / 289 (11-13/32) (ID / OD) Dimension Height (ID...
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Model CS-RZ25WKRW Indoor POS (EAN) 5025232912121 Model CU-RZ25WKR Outdoor POS (EAN) 5025232913169 Dry Bulb Wet Bulb Maximum °C (°F) 32 (89.6) 23 (73.4) Cooling Minimum °C (°F) 16 (60.8) 11 (51.8) Indoor Operation Range Maximum °C (°F) 30 (86.0) Heating Minimum °C (°F) 16 (60.8) Maximum °C (°F)
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Model CS-RZ35WKRW Indoor POS (EAN) 5025232913138 Model CU-RZ35WKR Outdoor POS (EAN) 5025232913176 Performance Test Condition Phase, Hz Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 1.00 3.50 3.90 1.00 3.50 3.90 Capacity BTU/h 3410 11900 13300 3410 11900...
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Model CS-RZ35WKRW Indoor POS (EAN) 5025232913138 Model CU-RZ35WKR Outdoor POS (EAN) 5025232913176 Type Cross-flow Fan Material ASG30 Motor Type DC (8-poles) Input Power 43.8 Output Power Cool Heat Cool Heat Cool 1020 Speed Heat 1090 Cool 1280 Heat 1340 Cool...
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Model CS-RZ35WKRW Indoor POS (EAN) 5025232913138 Model CU-RZ35WKR Outdoor POS (EAN) 5025232913176 Net (I/D/ O/D) kg (lb) 8 (18) / 31 (68) Weight Gross (I/D / O/D) kg (lb) 9 (20) / 33 (73) Stacking No. (CS / CU / CZ)
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Model CS-RZ42WKRW Indoor POS (EAN) 5025232913145 Model CU-RZ42WKR Outdoor POS (EAN) 5025232913183 Performance Test Condition Phase, Hz Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 1.15 4.20 5.00 1.15 4.20 5.00 Capacity BTU/h 3920 14300 17100 3920 14300 17100 kcal/h 3610...
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Model CS-RZ42WKRW Indoor POS (EAN) 5025232913145 Model CU-RZ42WKR Outdoor POS (EAN) 5025232913183 Type Cross-flow Fan Material ASG30 Motor Type DC (8-Poles) Input Power 43.8 Output Power Cool Heat Cool Heat Cool 1080 Speed Heat 1150 Cool 1280 Heat 1340 Cool 1330 Heat 1400...
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Model CS-RZ42WKRW Indoor POS (EAN) 5025232913145 Model CU-RZ42WKR Outdoor POS (EAN) 5025232913183 Net (I/D / O/D) kg (lb) 8 (18) / 31 (68) Weight Gross (I/D / O/D) kg (lb) 9 (20) / 34 (75) Stacking No. (CS / CU / CZ) 12 / 6 / - Pipe Diameter (Liquid / Gas) mm (inch)
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Model CS-RZ50WKRW Indoor POS (EAN) 5025232913152 Model CU-RZ50WKR Outdoor POS (EAN) 5025232913190 Performance Test Condition Phase, Hz Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 1.15 5.00 5.50 1.15 5.00 5.50 Capacity BTU/h 3920 17100 18800 3920 17100 18800 kcal/h 4300...
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Model CS-RZ50WKRW Indoor POS (EAN) 5025232913152 Model CU-RZ50WKR Outdoor POS (EAN) 5025232913190 Type Cross-flow Fan Material ASG30 Motor Type DC (8-Poles) Input Power 43.8 Output Power Cool Heat Cool Heat Cool 1120 Speed Heat 1150 Cool 1280 Heat 1390 Cool 1330 Heat 1420...
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Model CS-RZ50WKRW Indoor POS (EAN) 5025232913152 Model CU-RZ50WKR Outdoor POS (EAN) 5025232913190 Net (I/D O/D) kg (lb) 8 (18) / 36 (79) Weight Gross (I/D O/D) kg (lb) 9 (20) / 39 (86) Stacking No. (CS / CU / CZ) 12 / 6 / - Pipe Diameter (Liquid / Gas) mm (inch)
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Example: The indoor units’ combination below is possible to connect to CU-3Z54VBR. (Total nominal capacity of indoor units is between 4.5kW to 9.5kW) 1) Two CS-RZ35WKRW only. (Total nominal cooling capacity is 7.0kW) Remarks for CU-4Z71VBR 1. At least two indoor units must be connected.
4. Features Inverter Technology Wider output power range Energy saving Quick Cooling Quick Heating More precise temperature control Environment Protection Non-ozone depletion substances refrigerant (R32) Long Installation Piping Long piping up to 20 meters (RZ25/35/42WK) and 30 meters (RZ50WK) during single split connection only ...
5. Location of Controls and Components Indoor Unit Aluminium fin Anti-bacterial filter Front panel Auto OFF/ON button Use when remote control is misplaced Horizontal airflow or a malfunction occurs. direction louver Manually adjustable. Indicator POWER Vertical airflow TIMER Sunlight Sensor direction louver and Remote Do not adjust...
6. Dimensions Indoor Unit <Top View> <Side View> <Front View> <Side View> Air intake direction Air outlet Left piping direction Right piping hole <Bottom View> hole <Remote Control> OFF/ON OFF/ON POWERFUL/ FAN SPEED/ MODE QUIET <Rear View> TEMP SLEEP AIR SWING TIMER CANCEL DRAIN HOSE...
Outdoor Unit 6.2.1 CU-RZ25WKR CU-RZ35WKR <Top View> Space necessary for installation 67.6 104.7 104.9 60.5 100 mm 100 mm 1000 mm Anchor Bolt Pitch 320 x 570 2-way valve at Liquid side <Side View> (High Pressure) <Side View> <Front View> 3-way valve at Gas side (Low Pressure)
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6.2.2 CU-RZ42WKR CU-RZ50WKR <Top View> Space necessary for 68.7 installation (124) (62.6) 100 mm 100 mm 1000 mm Anchor Bolt Pitch 320 x 570 2-way valve at <Side View> Liquid side <Side View> <Front View> (High Pressure) 3-way valve at Gas side (Low Pressure) <Chassis>...
Outdoor Unit 9.2.1 CU-RZ25WKR CU-RZ42WKR REMARKS YELLOW BLU : BLUE (YEL) OR T(W) BLK : BLACK SINGLE PHASE POWER SUPPLY TO INDOOR UNIT BLUE WHT : WHITE (BLU) (RED) RED : RED OR S(V) OR R(U) YLW : YELLOW (TRADEMARK) GRY : GRAY TERMINAL COMPRESSOR TERMINAL...
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9.2.2 CU-RZ35WKR YELLOW (YEL) OR T(W) REMARKS BLU : BLUE BLK : BLACK SINGLE PHASE POWER SUPPLY TO INDOOR UNIT WHT : WHITE RED : RED BLUE YLW : YELLOW (RED) (BLU) GRY : GRAY OR R(U) OR S(V) GRN : GREEN TERMINAL TRADEMARK PNK : PINK...
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9.2.3 CU-RZ50WKR YELLOW (YEL) OR T(W) REMARKS SINGLE PHASE BLU : BLUE POWER SUPPLY BLK : BLACK TO INDOOR UNIT WHT : WHITE RED : RED BLUE YLW : YELLOW (RED) (BLU) GRY : GRAY OR R(U) OR S(V) GRN : GREEN TERMINAL TRADEMARK PNK : PINK...
12. Installation Instruction 12.1 Select the Best Location 12.1.2 Indoor Unit Installation Diagram 12.1.1 Indoor Unit Piping direction Attention not to bend (Front side) up drain hose Right Do not install the unit in excessive oil fume area Right Rear such as kitchen, workshop and etc.
12.2 Indoor Unit 12.2.1 How to Fix Installation Plate The mounting wall shall be strong and solid enough to prevent it from vibration. Ceiling Wall More than More than Wall More screw Indoor unit than 216 mm 168 mm Measuring Tape Installation plate PIPE PIPE...
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12.2.3 Indoor Unit Installation Pull out the Indoor piping ● Do not turn over the unit without shock absorber during pull out the piping. It may cause intake grille damage. ● Use shock absorber during pull out the piping to protect the intake grille from damage. Piping Piping Shock absorber...
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Change the drain hose position Rear view for left piping installation PIPE HOLE CENTER Connection cable 115mm TO HOLE CENTER Piping More than 950 mm Drain hose Connection cable Drain hose Drain cap Sleeve for piping hole Adjust the piping slightly Drain hose downwards.
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Secure firmly the connection cable onto the control board with the holder. Do not overtighten holder screw, as this may damage the holder. Tape Connection cable Terminal Board Earth Wire longer than others AC wires for safety reason Recommended Recommended length (mm) length (mm) Holder...
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12.2.5 Connect the Piping 12.2.5.1 Connecting the Piping to Indoor For connection joint of all models Additional Precautions For R32 Models when Please make flare after inserting flare nut (locate at connecting by flaring at indoor side joint portion of tube assembly) onto the copper pipe. Ensure to do re-flaring of pipes before connecting to units (In case of using long piping) to avoid leaking...
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12.2.5.3 Connecting the Piping to Outdoor Multi Decide piping length and then cut by using pipe cutter. Liquid side Remove burrs from cut edge. Make flare after inserting the Hall Union Flare Nut flare nut (locate at valve) onto the copper pipe. Align center Auxiliary pipe Connection pipe (male side)
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12.2.9 Evaluation of the Performance Operate the unit at cooling/heating operation mode for fifteen minutes or more. Measure the temperature of the intake and discharge air. Ensure the difference between the intake temperature and the discharge is more than 8°C during Cooling operation or more than 14°C Discharge air during Heating operation.
12.3 Select the Best Location 12.3.1 Outdoor Unit If an awning is built over the unit to prevent direct Power supply cable ( ) sunlight or rain, be careful that heat radiation from Connection cable ( ) the condenser is not obstructed. ...
12.4 Outdoor Unit 12.4.1 Install the Outdoor Unit After selecting the best location, start installation to Indoor/Outdoor Unit Installation Diagram. Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø10 mm). Make sure unit install in balance level to ensure that water flow out from unit drainage hole. When installing at roof, please consider strong wind and earthquake.
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AIR PURGING METHOD IS PROHIBITED FOR R32 SYSTEM 12.4.3 Air Tightness Test on the Refrigerating System Do not purge the air with refrigerants but use a vacuum pump to vacuum the installation. There is no extra refrigerant in the outdoor unit for air purging. ...
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12.4.4 Connect the Cable to the Outdoor Unit Remove the control board cover from the unit Demand control signal transmission cable by loosening the screw. between outdoor unit and DRED (Demand Cable connection to the power supply through response enabling devices) shall be double Isolating Devices (Disconnecting means).
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12.4.6 Disposal of Outdoor Unit Drain Water If a drain elbow is used, the unit should be placed on a stand which is taller than 3 cm. If the unit is used in an area where temperature falls below 0°C for 2 or 3 days in succession, it is recommended not to use a drain elbow, for the drain water freezes and the fan will not rotate.
12.5 Wired Remote Controller Installation Manual 12.5.1 Safety Precautions Read the following “SAFETY PRECAUTIONS” carefully before installation. Electrical work must be installed by a licensed electrician. The caution items stated here must be followed because these important contents are related to safety. The meaning of each indication used is as below.
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12.5.2 Attached Accessories Name Diagram Remark Remote controller Remote controller cable Length (9.9 m) Screw Installing the remote controller to an outlet box (M4 machine pitched – 30 mm) (embedded cable) Screw Installing the remote controller to the wall (M4 self tapping – 14 mm) (exposed cable) Remote controller cable holder Holder for remote controller cable at control board...
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Embed an outlet box (JIS C 8336) into the wall. Outlet box may be purchased separately. Medium-sized square outlet box (obtain locally) Part No. DS3744 (Panasonic Co., Ltd.) or equivalent. Secure the remote controller lower case to the outlet box with the two accessory screws 3. Make sure that the lower case is flat against the wall at this time, with no bending.
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B. If Remote Controller Cable is Exposed Install the remote controller lower case to the wall with the two accessory screws 4. Fasten the screws properly until screw head is lower than the rib and reach the base of remote controller lower case to ensure they do not damage the PCB inside the remote controller 1.
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12.5.5 Connecting the Remote Controller Cable to Indoor Unit CAUTION Be sure to turn off the main power before installing and connecting the remote controller. Otherwise, it will cause the electrical shock. Open front grille complete Install back terminal board cover complete. Be (Please refer HOW TO TAKE OUT FRONT careful not to clamp the cable between GRILLE).
13. Installation and Servicing Air Conditioner using R32 13.1 About R32 Refrigerant For air conditioning refrigerants such as R410A, the refrigerants were collected back in order to prevent their air dissipation, to curbe the global warming impact, in case they were released into the atmosphere. In the “4th Environmental Basic Plan”, 80% reduction of greenhouse gas emissions by 2050 is required, and due to this requirement, further reduction in the emission of high greenhouse effect gas, such as CFCs, is required.
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2. Characteristic of Pressure As shown in Table 2, R32 does not have much difference in vapor pressure at the same refrigerant temperature comparing to R410A, but comparing to R22, it is higher at 1.6 times more. Thus, the same as in case of R410A, it is necessary to do installation and service using high-pressure tools and components.
13.3 Refrigerant piping installation • Tools used in services 13.3.1 Required Tools R32 refrigerant air conditioners use the common parts as R410A air conditioners for two-way valves and three-way valves (diameters of service ports); thus, they maintain commonality in the maintenance of the compressive strength, the size of pipe flaring, and the size of flare nuts as R410A.
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3. Torque wrenches (diameters 1/2, 5/8) Manifold gauges / Charging hoses In order to strengthen the compressive strength, the diameters of wrenches change depending on the flare nut sizes. Torque wrenches Differences in charging hoses Differences in torque wrenches (common R410A) Normal 5.1 MPa 3.4 MPa...
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7. HFC refrigerant_Electric gas leakage tester 9. Refrigerant cylinders R32 refrigerant is often used for other mixed Refrigerant cylinders for R410A are painted in pink, refrigerant (R410A, R404A, R407C etc.). Therefore, and the ones for R32 are painted in other colors that the usage of existing HFC detectors is possible, but in might subject to change according to the international order to detect more accurately, we recommend to...
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11. Tools used for refrigerant piping installations and services Tools for R410A Common with R32 Possibility of usage for R22 ○ ○ Pipe cutters, reamers or scrapers ○ ○ Flare tools (clutch type) ○ ○ Torque wrench (1/4, 3/8) ○ ×...
13.4 New installation, Relocation, Repairing of Refrigerant Cycle System The Procedures Relocation Repairing refrigerant cycle Installation Indoor / outdoor units and piping Pump down Refrigerant recovery • Displacing pipes and wires, and displacing indoor / outdoor units Prevention of impurity •...
13.5 Piping installation of R32 13.5.1 Pipe materials used and flaring Copper pipes are used for refrigerant piping. Pipes Pipe thickness which comply with JIS Regulations need to be used. Room air conditioners which use R410A and R32 O and OL materials Thickness (mm) have higher pressure;...
13.6 Installation, Relocation, and Service 13.6.1 Air purge and gas leak test for new installation (using new refrigerant pipes) using vacuum pump (From the point of view of global environment protection, do not release CFCs into the atmosphere during installation work) 1.
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13.6.2 Process of refrigerant recovery 1. Connect the center charging hose of manifold gauge to the in-let side of recovery device. 2. Connect the valves of the discharge side of recovery device and liquid side of refrigerant cylinder with red hose (charging hose).
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13.6.3 Relocation 1. Removing the air conditioning unit a) Recovery of outdoor unit refrigerant by pumping down Press “forced cooling button” (as a general rule, since 1998 the name of cooling testing button is changed, and this name is unified within the air conditioning industry), and then you are able to start cooling operation in which the room temperature is low, and you can recover the refrigerant from the outdoor unit.
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13.6.6 Re-insertion of refrigerant in service When re-insertion is needed, follow the procedures to ensure the insertion of new refrigerant at correct amount. 1. Attach charging hose (blue) to the service port of the outdoor unit. 2. Attach charging hose (red) to the vacuum pump. Fully open the 2-way and 3-way valves. 3.
13.7 Repairing of refrigerant cycle / Brazing point 13.7.1 Preparation for repairing of refrigerant cycle / brazing Brazing which is a technique needed for repairing refrigerant cycle requires advanced technique and experience, and this brazing procedure can only be performed by the workers who completed “Gas Welding Skill Training” regulated by the Occupational Safety and Health Act, and went through the training programs of refrigerant operations.
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2. Cylinder without adjustment valve side gauge pressure is adjusted by the adjuster. Check the both side valves of the torch and open the cylinder valve to check the remaining refrigerant in the cylinder. Caution: Do not attach oil component on the connection port of the adjuster. Especially, use an oxygen cylinder adjuster which is no oil substance type.
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13.7.5 Types of flame Types of flame change based on the proportion of propane and oxygen. [Neutral Flame] Perform brazing with this flame (This is a flame when oxygen and propane are mixed at proper proportion, and has lesser effect on the brazed metals) White core flame 10 ~ 15 mm...
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13.7.7 Selection of brazing material Use BAg brazing material (silver solder) to increase the welding performance. Tensile strength Composition of ingredients (%) Temperature (°C) Characteristics (Reference) Category Standard Brazing Base Number applications Solidus Liquidus Kgf•cm temp material Liquidity is good at low temperature, 49.0 14.5...
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13.7.10 Checking of brazing (insert) points 1. No impurity on the brazing point Gap 0.025 ~ 0.05 mm If dirt or oil is attached on the brazing point, the Inner diameter ø6.45 brazing filler metal does not reach to junction, and it may cause poor welding.
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Melting temperature of copper • • • • • • • Approx. 1083°C Maximum temperature obtained in propane and oxygen • • • • • • • Approx. 1083°C The important point is to heat the bonding part uniformly within a short period of time until reaching to the brazing temperature in the following manner.
13.8 <Reference> Analysis method for no error code, no cooling / no warming 13.8.1 Preparation for appropriate diagnosis In order to obtain appropriate operation characteristics, minimum 15 minutes or more operation time [testing operation (rated operation)] is required. 1. Method of rated operation (rated operation) For the models which have two buttons of “emergency operation and forced cooling operation”, press forced cooling button once.
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1. Measuring temperature 1) Indoor unit suction temperature, release temperature, temperature difference, → Measure by thermometer 2) 2-way valve pipe temperature in cooling mode is low temperature (benchmark:5 ~ 10°C), in heating mode is medium temperature (benchmark:25 ~ 35°C). 3) 3-way valve pipe temperature in cooling mode is low temperature (benchmark:7 ~ 15°C) in heating mode is high temperature (benchmark:38 ~ 50°C).
14. Operation and Control 14.1 Basic Function Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operating mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and performing temperature shifting.
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14.1.5 Automatic Operation This mode can be set using remote control and the operation is decided by remote control setting temperature, remote control operation mode and indoor intake air temperature. During operation mode judgment, indoor fan motor (with speed of Lo-) is running for 30 seconds to detect the indoor intake air temperature.
14.2 Indoor Fan Motor Operation 14.2.1 Basic Rotation Speed (rpm) A. Basic Rotation Speed (rpm) i. Manual Fan Speed [Cooling, Dry, Fan] Fan motor’s number of rotation is determined according to remote control setting. ○ ○ ○ ○ ○ Remote control [Heating] ...
14.3 Outdoor Fan Motor Operation Outdoor fan motor is operated with one fan speed only. It starts when compressor starts operation and it stops 30 seconds after compressor stops operation. Compressor: Fan Speed Outdoor Fan: 30 sec 14.4 Airflow Direction ...
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Side View (Inner Vane) Closed Position Stopper 110º Reference point Step 1 Step 2 Step 3 Step 4 Step 5 Side View (Outer Vane) Closed Position Stopper 115º Reference point Step 1 Step 2 Step 3 Step 4 Step 5 Figure 2 * The horizontal vane angle tolerance is within +/- 5 degree.
14.5 Timer Control There are 2 sets of ON and OFF timer available to turn the unit ON or OFF at different preset time. If more than one timer had been set, the upcoming timer will be displayed and will activate in sequence. 14.5.1 ON Timer Control ...
14.8 Quiet Operation (Cooling Mode/Cooling Area of Dry Mode) A. Purpose To provide quiet cooling operation compare to normal operation. B. Control condition a. Quiet operation start condition When “FAN SPEED/QUIET” button at remote control is pressed continuously until QUIET will be shown on remote control display.
14.11 ECO Operation Purpose This operation is use to reduce electrical power consumption by combining both temperature shifting and current limitation. Control Condition ECO operation start condition When POWERFUL/ECO button at remote control is pressed 2 times until ECO will be shown on remote control display and LED indicator light is ON.
14.12 Sleep Mode Operation This operation provide comfortable environment while sleeping. It will automatically adjust the sleep pattern temperature during the activation period. SLEEP (Cancel) This operation is incorporated with the activation timer (0.5, 1, 2, 3, 4, 5, 6, 7, 8 or 9 hours). Start Condition: ...
Heating mode i t c Set Temp -1°C 1 Hr Max 9 Hrs Sleep operation will not undergo temperature shift when it collaborate with below operation. However, it will execute the delay timer. Powerful mode operation Auto mode operation Stop Condition: ...
14.14 Demand Control When the air-conditioner connected to Demand Response Enabling Devices (DRED), the power consumption especially during peak hours could be controlled. Relay 1 DRM1 Relay 2 DRM2 Relay 3 DRM3 DRED AIR-CONDITIONER Three Demand response modes (DRM) are available DRM1 = Compressor cut off DRM2 = Operate at 50% of rated input power DRM3 = Operate at 75% of rated input power...
15. Operation Control (For Multi Split Connection) During multi split connection, indoor unit’s operation controls are same with single split connection unless specified in this chapter. 15.1 Cooling Operation 15.1.1 Thermostat Control Capability supply to indoor unit is OFF (Expansion valve closed) when Intake Air Temperature — Internal setting temperature <...
15.4 Automatic Operation This mode can be set using remote control and the operation is decided by remote control setting temperature, remote control operation mode, indoor intake and outdoor air temperature. During operation mode judgment, indoor fan motor (with speed of -Lo) and outdoor fan motor are running for 30 seconds to detect the indoor intake and outdoor air temperature.
16. Protection Control 16.1 Protection Control for All Operations 16.1.1 Restart Control (Time Delay Safety Control) The Compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on again by pressing OFF/ON button at remote control within this period. ...
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16.1.4 Compressor Overheating Prevention Control Instructed frequency for compressor operation will be regulated by compressor discharge temperature. The changes of frequency are as below. If compressor discharge temperature exceeds 103°C, compressor will be stopped, occurs 4 times per 20 minutes, timer LED will be blinking.
16.2 Protection Control for Cooling & Soft Dry Operation 16.2.1 Outdoor Air Temperature Control The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below. This control will begin 1 minute after the compressor starts. ...
16.2.6 Odor Cut Control To reduce the odor released from the unit. Start Condition AUTO FAN Speed is selected during COOL or DRY operation. During freeze prevention control and timer preliminary operation, this control is not applicable. Control content ...
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16.3.3 Overload Protection Control The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown below. If the heat exchanger temperature exceeds 60°C, compressor will stop. 60°C Frequency Reduce 55°C 52°C Frequency Limited 49°C 46°C Free Indoor Heat...
17. Servicing Mode 17.1 Auto OFF/ON Button AUTO OPERATION MODE The Auto operation will be activated immediately once the Auto OFF/ON button is pressed. This operation can be used to operate air conditioner with limited function if remote control is misplaced or malfunction. TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE) The Test Run operation will be activated if the Auto OFF/ON button is pressed continuously for more than 5 seconds.
REMOTE CONTROL RECEIVING SOUND OFF/ON MODE The Remote Control Receiving Sound OFF/ON Mode will be activated if the Auto OFF/ON button is pressed continuously for more than 16 seconds (4 “beep” sounds will occur at 16th seconds to identify the Remote Control Receiving Sound Off/On Mode is in standby condition) and press “AC Reset”...
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17.3.2 Operation mode during Cooling Only and Heating Only Operation The table below shows the operation mode comparison when Heating Only Operation Mode Activated and Deactivated. Operation mode Cooling Only Operation Mode Activated Heating Only Operation Mode Activated Normal Operation Mode After 30s sampling, the unit will judge After 30s sampling, regardless of indoor After 30s sampling, regardless of indoor...
17.4 Remote Control Button 17.4.1 SET Button To check remote control transmission code and store the transmission code to EEPROM. Press “Set” button by using pointer. Press “Timer Set” button until a “beep” sound is heard as confirmation of transmission code change. LCD returns to original display if remote control does not operate for 30 seconds.
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To limit set temperature range for COOL & DRY, HEAT, AUTO mode. Press “Set” button by using pointer. Press TEMP increment or decrement button to choose No. 3. Press Timer increment or decrement button to select desired temperature low limit of set temperature for COOL &...
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Press TEMP increment or decrement button to choose No. 5. Press Timer increment or decrement button to select desired temperature low limit of set temperature for HEAT mode. Normal display mode Press SW to enter customer zone & Press SW’s to choose function 5 i) Display latest set temp (Low1).
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Press TEMP increment or decrement button to choose No. 12. Press Timer increment or decrement button to select desired temperature low limit of set temperature for AUTO mode. Normal display mode Press SW to enter customer zone & Press SW’s to choose function 12 i) Display latest set temp (Low3).
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17.4.2 RESET (RC) To clear and restore the remote control setting to factory default. Press once to clear the memory. 17.4.3 RESET (AC) To restore the unit’s setting to factory default. Press once to restore the unit’s setting. TIMER ▲...
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17.4.6 Customization mode LCD display area: Customization display area (highlighted in color) OFF/ON OFF/ON POWERFUL/ FAN SPEED/ MODE QUIET TEMP SLEEP AIR SWING TIMER CANCEL Function AIR CONDITIONER Options (If any) Cannot enter this customization mode under the following conditions: 1 Operation ON.
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Customization list table: Note: The functions described in the table may not be applicable to the model and may subject to change without further notice. Customization Options Remark Name Remote control number selection A, B, C, D Solar radiation sensitivity level adjustment 1, 2, 3, 4, 5 [iAUTO-X/iAUTO/iCOMF, Cool &...
18. Troubleshooting Guide 18.1 Refrigeration Cycle System In order to diagnose malfunctions, make sure that there are no Normal Pressure and Outlet Air Temperature (Standard) electrical problems before inspecting the refrigeration cycle. Gas pressure Outlet air temperature Such problems include insufficient insulation, problem with the (kg/cm (°C) power source, malfunction of a compressor and a fan.
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18.1.1 Relationship Between the Condition of the Air Conditioner and Pressure and Electric Current Cooling Mode Heating Mode Condition of the Electric current Electric current air conditioner Low Pressure High Pressure Low Pressure High Pressure during operation during operation Insufficient refrigerant ...
18.2 Breakdown Self Diagnosis Function 18.2.1 Self Diagnosis Function (Three Digits Alphanumeric Code) Every press of the button (up or down) will Once abnormality has occurred during operation, increase abnormality numbers and transmit the unit will stop its operation, and Timer LED abnormality code signal to the main unit.
18.3 Error Code Table Diagnosis Abnormality / Abnormality Protection Problem Check location display Protection control Judgment Operation No memory of failure — Normal operation — — Indoor fan only Indoor/outdoor wire terminal Indoor/outdoor operation can Indoor/outdoor After operation for ...
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Diagnosis Abnormality / Abnormality Protection Problem Check location display Protection control Judgment Operation Check indoor/outdoor Wrong wiring and connection wire and connection Abnormal wiring or — — connecting pipe, expansion pipe piping connection Expansion valve and lead wire valve abnormality and connector ...
18.4 Self-diagnosis Method 18.4.1 H11 (Indoor/Outdoor Abnormal Communication) Malfunction Decision Conditions During startup and operation of cooling and heating, the data received from outdoor unit in indoor unit signal transmission is checked whether it is normal. Malfunction Caused Faulty indoor unit PCB.
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18.4.2 H12 (Indoor/Outdoor Capacity Rank Mismatched) Malfunction Decision Conditions During startup, error code appears when different types of indoor and outdoor units are interconnected. Malfunction Caused Wrong models interconnected. Wrong indoor unit or outdoor unit PCBs mounted. ...
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18.4.3 H14 (Indoor Intake Air Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the indoor intake air temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. ...
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18.4.4 H15 (Compressor Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor compressor temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor.
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18.4.5 H16 (Outdoor Current Transformer) Malfunction Decision Conditions An input current, detected by Current Transformer CT, is below threshold value when the compressor is operating at certain frequency value for 3 minutes. Malfunction Caused Lack of gas. Broken CT (current transformer).
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18.4.6 H19 (Indoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor (feedback of rotation > 2550 rpm or < 50 rpm). Malfunction Caused ...
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18.4.7 H23 (Indoor Pipe Temperature Sensor 1 Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger temperature sensor 1 are used to determine sensor errors. Malfunction Caused Faulty connector connection.
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18.4.8 H24 (Indoor Pipe Temperature Sensor 2 Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger temperature sensor 2 are used to determine sensor errors. Malfunction Caused Faulty connector connection.
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18.4.9 H25 (nanoe-G Air Purifying System Abnormal) Malfunction Decision Conditions During standby of cooling and heating operation, nanoe-G breakdown occurs and air conditioner stops operation. Malfunction Caused Faulty indoor main PCB. Faulty indoor nanoe-G power module. Troubleshooting When abnormality indication starts again For safety reason and to prevent component breakdown, always switch off the power...
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18.4.10 H27 (Outdoor Air Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor air temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. ...
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18.4.11 H28 (Outdoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. ...
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18.4.12 H30 (Compressor Discharge Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor discharge pipe temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. ...
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18.4.13 H33 (Unspecified Voltage between Indoor and Outdoor) Malfunction Decision Conditions The supply power is detected for its requirement by the indoor/outdoor transmission. Malfunction Caused Wrong models interconnected. Wrong indoor unit and outdoor unit PCBs used. Indoor unit or outdoor unit PCB defective.
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18.4.14 H59 (Human Activity Sensor Abnormality) Malfunction Decision Conditions Feedback signal of human activity sensor. Malfunction Caused Feedback signal is fixed at 0 VDC or 5 VDC continuously for 25 seconds during ECONAVI or AUTO COMFORT operation. Feedback signal is detected during ECONAVI or AUTO COMFORT off.
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18.4.15 H70 (Light Sensor Abnormality) Malfunction Decision Conditions Feedback signal of light sensor. Malfunction Caused Feedback value is 0 VDC continuously. Troubleshooting When abnormality indication starts again. For safety reason and to prevent Check the connector connection: component breakdown, always switch Turn off the power.
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18.4.16 H97 (Outdoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor. Malfunction Caused Operation stops due to short circuit inside the fan motor winding. ...
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18.4.17 H98 (Error Code Stored in Memory and no alarm is triggered / no TIMER LED flashing) Malfunction Decision Conditions Indoor high pressure is detected when indoor heat exchanger is detecting very high temperature when the unit is operating in heating operation. ...
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18.4.18 H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry) Error Code will not display (no Timer LED blinking) but store in EEPROM Malfunction Decision Conditions Freeze prevention control takes place (when indoor pipe temperature is lower than 2°C). Malfunction Caused ...
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18.4.19 F11 (4-way Valve Switching Failure) Malfunction Decision Conditions When indoor heat exchanger is cold during heating (except deice) or when indoor heat exchanger is hot during cooling and compressor operating, the 4-way valve is detected as malfunction. Malfunction Caused ...
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18.4.20 F90 (Power Factor Correction Protection) Malfunction Decision Conditions To maintain DC voltage level supply to power transistor. To detect high DC voltage level after rectification. Malfunction Caused During startup and operation of cooling and heating, when Power Factor Correction (PFC) protection circuitry at the outdoor unit main PCB senses abnormal DC voltage level for power transistors.
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18.4.21 F91 (Refrigeration Cycle Abnormality) Malfunction Decision Conditions The input current is low while the compressor is running at higher than the setting frequency. Malfunction Caused Lack of gas. 3-way valve close. Troubleshooting When F91 indication happens. For safety reason and to prevent component breakdown, always switch off the power before remove and...
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18.4.22 F93 (Compressor Rotation Failure) Malfunction Decision Conditions A compressor rotation failure is detected by checking the compressor running condition through the position detection circuit. Malfunction Caused Compressor terminal disconnect. Faulty Outdoor PCB. Faulty compressor. Troubleshooting When F93 indication happens.
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18.4.23 F95 (Outdoor High Pressure Protection: Cooling or Soft Dry) Malfunction Decision Conditions During operation of cooling or soft dry, when outdoor unit heat exchanger high temperature data is detected by the outdoor unit heat exchanger thermistor. Malfunction Caused ...
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18.4.24 F96 (IPM Overheating) Malfunction Decision Conditions During operating of cooling and heating, when IPM temperature data (120°C) is detected by the IPM temperature sensor. Multi Models only Compressor Overheating: During operation of cooling and heating, when the compressor OL is activated. Heat Sink Overheating: During operation of cooling and heating, when heat sink temperature data (90°C) is detected by the heat sink temperature sensor.
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18.4.25 F97 (Compress Overheating) Malfunction Decision Conditions During operation of cooling and heating, when compressor tank temperature data (103°C) is detected by the compressor tank temperature sensor. Malfunction Caused Faulty compressor tank temperature sensor 2/3 way valve closed ...
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18.4.26 F98 (Input Over Current Detection) Malfunction Decision Conditions During operation of cooling and heating, when an input over-current (X value in Total Running Current Control) is detected by checking the input current value being detected by current transformer (CT) with the compressor running.
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18.4.27 F99 (DC Peak Detection) Malfunction Decision Conditions During startup and operation of cooling and heating, when inverter DC peak data is received by the outdoor internal DC Peak sensing circuitry. Malfunction Caused DC current peak due to compressor failure. ...
19. Disassembly and Assembly Instructions WARNING High Voltage is generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks. 19.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 19.1.1...
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6. Remove the Particular Piece from the 3 hooks. Figure 3 9. Remove the earth wire screw. 11. Detach all connectors as labelled from the Main Electronic Controller. Then pull out the Main Electronic Controller gently. AC303 10. Pull out the Main Electronic Controller halfway.
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19.1.3 To Remove Discharge Grille 13. Pull out and remove the Drain Hose from the Discharge Grille. 12. Remove the 2 screws of the Discharge Grille. 14. Then pull the Discharge Grille downward gently to dismantle it. Figure 6 19.1.4 To Remove Control Board 15.
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19.1.5 To Remove Cross Flow Fan and Indoor Fan Motor 16. Remove the screw that holding the Cross Flow Fan and Fan Motor axis. Figure 8 18. Remove the Bearing by pulling it gently. 17. Remove the screw from the Evaporator. Figure 9...
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Evaporator 19. Push the holdfast to the left and lift up the Evaporator. 21. Fan Motor can be removed after the removal of the Cross Flow Fan. Reminder: To reinstall the Fan Motor, adjust the Fan Motor connector to 60° towards you before fixing Control Board Cross Flow Fan 20.
19.2 Outdoor Electronic Controller Removal Procedure 19.2.1 CU-RZ25WKR CU-RZ35WKR Caution! When handling electronic controller, be careful of electrostatic discharge. Remove the 5 screws of the Cabinet Top Remove the Control Board as follows: Plate. Screws Release 3 Terminal Cabinet Top Plate Connectors, L, N Screws and Earth Wire Screw.
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19.2.2 CU-RZ42WKR CU-RZ50WKR Caution! When handling electronic controller, be careful of electrostatic discharge. Remove the 5 screws of the Top Panel. Remove the Control Board as follows: Fig. 1 Remove the 8 screws of the Front Panel. Fig. 4 Fig. 2 Remove the screw of the Terminal Board Cover.
20. Technical Data Technical data provided are based on the air conditioner running under free frequency. 20.1 Cool Mode Performance Data - Sensible Capacity Chart Unit setting: Standard piping length, Hi Fan, Cool mode at 16°C Voltage: 230V/240V 20.1.1 CS-RZ25WKRW CU-RZ25WKR Cooling Indoor (°C) Outdoor DB (°C)
21. Service Data Service data provided are based on the air conditioner running under rated frequency during forced cooling / forced heating mode. 21.1 Cool Mode Outdoor Air Temperature Characteristic Condition - Indoor room temperature: 27°C DryBulb/19°C Wet Bulb - Unit setting: Standard piping length, forced cooling at 16°C, Hi fan - Compressor frequency: Rated for cooling operation - Piping length: 5m - Voltage: 230-240V...
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21.1.2 CS-RZ35WKRW CU-RZ35WKR 18.000 Indoor Discharge Outdoor Air Temperature Temperature (°C) 17.000 (°C) 13.37 16.000 13.45 15.000 13.51 14.04 14.000 14.86 13.000 17.83 Outdoor Air Temperature (°C) 3.900 3.800 Outdoor Cooling Capacity 3.700 Temperature (°C) (kW) 3.600 3.500 3.87 3.400 3.747...
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21.1.3 CS-RZ42WKRW CU-RZ42WKR 16.000 Indoor Discharge Outdoor 15.500 Air Temperature Temperature (°C) 15.000 (°C) 14.500 11.92 14.000 11.98 13.500 12.04 13.000 12.500 12.51 12.000 13.24 11.500 15.89 Outdoor Air Temperature (°C) 4.800 Outdoor Cooling Capacity 4.600 Temperature (°C) (kW) 4.400 4.644 4.200 4.496...
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21.1.4 CS-RZ50WKRW CU-RZ50WKR 13.600 Indoor Discharge Outdoor 13.400 Air Temperature Temperature (°C) 13.200 (°C) 13.000 12.21 12.800 12.28 12.600 11.84 12.400 12.200 12.15 12.000 12.72 11.800 13.55 Outdoor Air Temperature (°C) 5.600 Outdoor Cooling Capacity 5.400 Temperature (°C) (kW) 5.200 5.528 5.000 5.353...
21.3 Piping Length Correction Factor The characteristic of the unit has to be corrected in accordance with the piping length. 21.3.1 CS-RZ25WKRW CU-RZ25WKR CS-RZ35WKRW CU-RZ35WKR Cooling Capacity 1.010 1.000 1.0015 0.990 0.980 1.0000 0.970 0.9878 0.960 0.950 0.9753 0.940 0.9314 0.930...
22. Exploded View and Replacement Parts List 22.1 Indoor Unit CWH55025J CWH55051AJ 65810 -467 65810 -467 65810 -467 65810 -467 65810 -467 65810 -467 65810 -467 65810 -467 Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
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SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-RZ25WKRW CS-RZ35WKRW REMARK ← CHASSIS COMPLETE ACXD50C03410 ← FAN MOTOR L6CBYYYL0334 ← CROSS-FLOW FAN COMPLETE ACXH02C01190 ← BEARING ASSY CWH64K1006 ← SCREW - CROSS-FLOW FAN CWH551146 EVAPORATOR ACXB30C31520 ACXB30C31740 ← FLARE NUT (LIQUID) CWT251048 ←...
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SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-RZ42WKRW CS-RZ50WKRW REMARK ← CHASSIS COMPLETE ACXD50C03410 ← FAN MOTOR L6CBYYYL0334 ← CROSS-FLOW FAN COMPLETE ACXH02C01190 ← BEARING ASSY CWH64K1006 ← SCREW - CROSS-FLOW FAN CWH551146 EVAPORATOR ACXB30C31740 ACXB30C31530 ← FLARE NUT (LIQUID) CWT251048 ←...
22.2 Outdoor Unit 22.2.1 CU-RZ25WKR 65806 -485 65806 -485 Note: The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
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SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-RZ25WKR REMARK SHOCK ABSORBER (LEFT) CWG713778 SHOCK ABSORBER (RIGHT) CWG713779 C.C.CASE ACXG50-48891 MODEL LABEL ACXF85-48590 INDICATION LABEL -R32 CWF746074 (NOTE) All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). “O” marked parts are recommended to be kept in stock.
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22.2.2 CU-RZ35WKR 65805 -486 65805 -486 Note: The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
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SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-RZ35WKR REMARK PACKING-L.TUBE CWB81012 CWG861078 BASE BOARD-COMPLETE CWG62C1223 SHOCK ABSORBER (LEFT) CWG713778 SHOCK ABSORBER (RIGHT) CWG713779 C.C.CASE ACXG50-48891 MODEL LABEL ACXF85-48600 INDICATION LABEL -R32 CWF746074 (NOTE) All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). ...
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22.2.3 CU-RZ42WKR CU-RZ50WKR CU-RZ42WKR 65806 -486 65806 -486 CU-RZ50WKR 65807 -486 65807 -486 Note: The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
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